CN215336438U - Boiler waste heat efficient recovery device with composite phase change heat exchanger - Google Patents
Boiler waste heat efficient recovery device with composite phase change heat exchanger Download PDFInfo
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- CN215336438U CN215336438U CN202120555408.0U CN202120555408U CN215336438U CN 215336438 U CN215336438 U CN 215336438U CN 202120555408 U CN202120555408 U CN 202120555408U CN 215336438 U CN215336438 U CN 215336438U
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- heat exchanger
- change heat
- waste heat
- flue gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model belongs to the technical field of efficient recovery of flue gas waste heat, and discloses a boiler waste heat efficient recovery device with a composite phase-change heat exchanger, wherein a water preheater, an air preheater and two phase-change heat exchangers are sequentially arranged on a flue gas channel, the two phase-change heat exchangers are arranged adjacently, and a gas bag is connected between the two phase-change heat exchangers through a pipeline; the phase change heat exchanger is provided with an evaporation device and a condensation device, and the condensation device is arranged on the outer side of the flue gas pipeline. The middle part of the flue gas pipeline is provided with a smoke distribution box, the smoke distribution box is arranged between the air preheater and the phase-change heat exchanger, and the inlet end of the smoke distribution box is provided with a flue gas filter plate. The utility model has simple and reasonable structure, convenient maintenance, high waste heat utilization rate and good flue gas waste heat recovery effect, can effectively protect the heat exchanger through the smoke distribution box, further saves energy and improves the waste heat utilization rate.
Description
Technical Field
The utility model belongs to the technical field of efficient recovery of flue gas waste heat, and particularly relates to a boiler waste heat efficient recovery device with a composite phase change heat exchanger.
Background
At present, the waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the energy consumption device of the operated industrial enterprise due to the limitations of factors such as history, technology, concept and the like. The method comprises the steps of high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like. According to investigation, the total waste heat resources of all industries account for 17% -67% of the total fuel consumption, and the recyclable waste heat resources account for 60% of the total waste heat resources.
The flue gas contains solid particles with higher concentration in the form of fly ash, so that the heat exchanger is easy to wear; in addition, the existing waste heat recovery device has low waste heat utilization rate, and causes energy waste.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) the solid particles in the flue gas easily cause the abrasion of the heat exchanger.
(2) The existing waste heat recovery device has low waste heat utilization rate and causes energy waste.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a high-efficiency boiler waste heat recovery device with a composite phase-change heat exchanger.
The utility model is realized in this way, a boiler waste heat high-efficiency recovery device with a composite phase change heat exchanger is provided with:
a flue gas channel;
the smoke channel is sequentially provided with a water preheater, an air preheater and two phase change heat exchangers, the two phase change heat exchangers are arranged adjacently, and a gas bag is connected between the two phase change heat exchangers through a pipeline;
the phase change heat exchanger is provided with an evaporation device and a condensation device, and the condensation device is arranged on the outer side of the flue gas pipeline.
The utility model has simple and reasonable structure, convenient maintenance, high waste heat utilization rate and good flue gas waste heat recovery effect, can effectively protect the heat exchanger through the smoke distribution box, further saves energy and improves the waste heat utilization rate.
Further, the middle part of the flue gas pipeline is provided with a smoke distribution box, the smoke distribution box is arranged between the air preheater and the phase-change heat exchanger, and the inlet end of the smoke distribution box is provided with a flue gas filter plate.
The utility model is used for filtering impurities such as dust in flue gas, can effectively protect the heat exchanger from being damaged, and prolongs the service life.
Furthermore, a turbulent flow pipe is arranged in a smoke channel on the right side of the smoke distribution box, and the turbulent flow pipe is fixed on the smoke exhaust branch pipe through a compression sleeve.
The smoke discharged by the boiler enters the smoke distribution box, the turbulent flow tube can disturb airflow to ensure that the airflow can fully exchange heat, and the compression sleeve can ensure that the turbulent flow tube is convenient to disassemble and assemble and is convenient to use.
Furthermore, a water return pipe is arranged at the outlet end of the water preheater, a valve is arranged on the water return pipe, and the other end of the water return pipe is communicated with the water tank.
The water tank can increase functionality, realize heating function and increase the utilization rate of waste heat.
Further, a plurality of radiating fins are integrally arranged at the right end of the smoke distribution box on the smoke channel.
The surface of the flue gas channel is provided with the radiating fins, so that the heat exchange effect can be improved.
By combining all the technical schemes, the utility model has the advantages and positive effects that:
the utility model has the advantages of simple and reasonable structure, convenient maintenance, high waste heat utilization rate and good flue gas waste heat recovery effect, can effectively protect the heat exchanger through the smoke distribution box, further saves energy and improves the waste heat utilization rate.
Secondly, the utility model is used for filtering impurities such as dust in the flue gas, can effectively protect the heat exchanger from being damaged and prolongs the service life.
Thirdly, the smoke exhausted by the boiler enters the smoke distribution box, the turbulent flow pipe can disturb the airflow to ensure that the airflow can fully exchange heat, and the compression sleeve can ensure that the turbulent flow pipe is convenient to disassemble and assemble and convenient to use.
Fourthly, the water tank can increase functionality, realize a heating function and increase the utilization rate of waste heat.
Fifthly, the surface of the flue gas channel is provided with the radiating fins, so that the heat exchange effect can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a boiler waste heat efficient recovery device with a composite phase change heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cigarette distribution box provided by the embodiment of the utility model;
FIG. 3 is a schematic structural view of the turbulence tube of the present invention;
FIG. 4 is a schematic view of the structure of the heat sink of the present invention;
in the figure: 1. a flue gas channel; 2. a water preheater; 3. an air preheater; 4. a valve; 5. a water tank; 6. a tobacco distribution box; 7. a phase change heat exchanger; 8. air bags; 9. a turbulent flow tube; 10. a flue gas filter plate; 11. and a heat sink.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Aiming at the problems in the prior art, the utility model provides a high-efficiency boiler waste heat recovery device with a composite phase change heat exchanger, and the utility model is described in detail with reference to the attached drawings.
As shown in fig. 1 to 4, the boiler waste heat high-efficiency recovery device with a composite phase change heat exchanger provided by the utility model comprises: flue gas passageway 1, water heater 2, air heater 3, valve 4, water tank 5, cloth smoke box 6, phase transition heat exchanger 7, gas package 8, vortex pipe 9, flue gas filter 10, fin 11.
The flue gas channel of the embodiment is sequentially provided with a water preheater 2, an air preheater 3 and a phase change heat exchanger 7, the number of the phase change heat exchangers 7 is two, the two phase change heat exchangers 7 are adjacently arranged, and a gas bag 8 is connected between the two phase change heat exchangers 7 through a pipeline; the phase change heat exchanger 7 is provided with an evaporation device and a condensation device, and the condensation device is arranged outside the flue gas pipeline 1. The utility model has simple and reasonable structure, convenient maintenance, high waste heat utilization rate and good flue gas waste heat recovery effect, can effectively protect the heat exchanger through the smoke distribution box 6, further saves energy and improves the waste heat utilization rate.
In this embodiment, 1 middle part of flue gas pipeline is provided with cloth smoke box 6, and cloth smoke box 6 sets up between air heater 3 and phase change heat exchanger 7, and the entry end of cloth smoke box 6 is equipped with flue gas filter 10. The smoke distribution box 6 is used for filtering impurities such as dust in smoke, and can effectively protect the heat exchanger from being damaged and prolong the service life.
In this embodiment, be provided with vortex pipe 9 in the 6 right side flue gas passageways of cloth smoke box, vortex pipe 9 is fixed in on the branch pipe of discharging fume through compressing tightly the cover. Boiler exhaust flue gas gets into cloth smoke box 6, can carry out the disturbance to the air current through turbulent flow pipe 9, makes it can abundant heat transfer, and compresses tightly the cover and can make turbulent flow pipe 9 convenient to detach installation, convenient to use.
In this embodiment, the outlet end of the water preheater 2 is provided with a water return pipe, the water return pipe is provided with a valve 4, and the other end of the water return pipe is communicated with a water tank 5; the water tank 5 can increase functionality, realize heating function, increase the utilization ratio of waste heat.
In this embodiment, the integration of 6 right-hand members of cloth smoke box is provided with a plurality of fin 11 on the flue gas passageway, can increase the heat transfer effect.
The working principle of the utility model is as follows: when the flue gas passes through, the valve 4 is opened, and the water in the water tank 5 can be heated by the water preheater 2, so that the utilization rate of waste heat is increased; when the flue gas passes through the smoke distribution box 6, the smoke distribution box 6 filters impurities such as dust in the flue gas to effectively protect the heat exchanger from being damaged, and the service life is prolonged; finally, heat exchange is carried out through a phase change heat exchanger 7.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the utility model, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. The utility model provides a take compound phase change heat exchanger's high-efficient recovery unit of boiler waste heat which characterized in that, take compound phase change heat exchanger's high-efficient recovery unit of boiler waste heat is provided with:
a flue gas channel;
the smoke channel is sequentially provided with a water preheater, an air preheater and two phase change heat exchangers, the two phase change heat exchangers are arranged adjacently, and a gas bag is connected between the two phase change heat exchangers through a pipeline;
the phase change heat exchanger is provided with an evaporation device and a condensation device, and the condensation device is arranged on the outer side of the flue gas channel.
2. The efficient boiler waste heat recovery device with the composite phase-change heat exchanger as claimed in claim 1, wherein a smoke distribution box is arranged in the middle of the smoke channel, the smoke distribution box is arranged between the air preheater and the phase-change heat exchanger, and a smoke filter plate is arranged at the inlet end of the smoke distribution box.
3. The efficient boiler waste heat recovery device with the composite phase-change heat exchanger as claimed in claim 2, wherein a turbulent flow tube is arranged in the flue gas channel at the right side of the smoke distribution box, and the turbulent flow tube is fixed on the smoke exhaust branch tube through a compression sleeve.
4. The efficient boiler waste heat recovery device with the composite phase-change heat exchanger as claimed in claim 1, wherein a water return pipe is arranged at the outlet end of the water preheater, a valve is arranged on the water return pipe, and the other end of the water return pipe is communicated with the water tank.
5. The efficient boiler waste heat recovery device with the composite phase-change heat exchanger as claimed in claim 1, wherein a plurality of cooling fins are integrally arranged at the right end of the smoke distribution box on the smoke channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120555408.0U CN215336438U (en) | 2021-03-18 | 2021-03-18 | Boiler waste heat efficient recovery device with composite phase change heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120555408.0U CN215336438U (en) | 2021-03-18 | 2021-03-18 | Boiler waste heat efficient recovery device with composite phase change heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215336438U true CN215336438U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120555408.0U Active CN215336438U (en) | 2021-03-18 | 2021-03-18 | Boiler waste heat efficient recovery device with composite phase change heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215336438U (en) |
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2021
- 2021-03-18 CN CN202120555408.0U patent/CN215336438U/en active Active
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